Evaluate the following:(i) 2x3+2x2-7x+72, when x=3-5i2(ii) x4-4x3+4x2+ – InterviewSolution

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1.	Evaluate the following:(i) 2x3+2x2-7x+72, when x=3-5i2(ii) x4-4x3+4x2+8x+44, when x=3+2i(iii) x4+4x3+6x2+4x+9, when x=-1+i2(iv) x6+x4+x2+1, when x=1+i2(v) 2x4+5x3+7x2-x+41, when x=-2-3i
Answer» Evaluate the following: (i) $2 x^{3} + 2 x^{2} - 7 x + 72, when x = \frac{3 - 5 i}{2}$ (ii) $x^{4} - 4 x^{3} + 4 x^{2} + 8 x + 44, when x = 3 + 2 i$ (iii) $x^{4} + 4 x^{3} + 6 x^{2} + 4 x + 9, when x = - 1 + i \sqrt{2}$ (iv) $x^{6} + x^{4} + x^{2} + 1, when x = \frac{1 + i}{\sqrt{2}}$ (v) $2 x^{4} + 5 x^{3} + 7 x^{2} - x + 41, when x = - 2 - \sqrt{3} i$

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